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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
3 | #include "sd-dhcp-server.h" | |
4 | ||
5 | #include "alloc-util.h" | |
6 | #include "bus-common-errors.h" | |
7 | #include "bus-util.h" | |
8 | #include "dhcp-server-internal.h" | |
9 | #include "networkd-dhcp-server-bus.h" | |
10 | #include "networkd-link-bus.h" | |
11 | #include "networkd-manager.h" | |
12 | #include "strv.h" | |
13 | ||
14 | static int property_get_leases( | |
15 | sd_bus *bus, | |
16 | const char *path, | |
17 | const char *interface, | |
18 | const char *property, | |
19 | sd_bus_message *reply, | |
20 | void *userdata, | |
21 | sd_bus_error *error) { | |
22 | Link *l = userdata; | |
23 | sd_dhcp_server *s; | |
24 | DHCPLease *lease; | |
25 | Iterator i; | |
26 | int r; | |
27 | ||
28 | assert(reply); | |
29 | assert(l); | |
30 | ||
31 | s = l->dhcp_server; | |
32 | if (!s) | |
33 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Link %s has no DHCP server.", l->ifname); | |
34 | ||
35 | r = sd_bus_message_open_container(reply, 'a', "(uayayayayt)"); | |
36 | if (r < 0) | |
37 | return r; | |
38 | ||
39 | HASHMAP_FOREACH(lease, s->leases_by_client_id, i) { | |
40 | r = sd_bus_message_open_container(reply, 'r', "uayayayayt"); | |
41 | if (r < 0) | |
42 | return r; | |
43 | ||
44 | r = sd_bus_message_append(reply, "u", (uint32_t)AF_INET); | |
45 | if (r < 0) | |
46 | return r; | |
47 | ||
48 | r = sd_bus_message_append_array(reply, 'y', lease->client_id.data, lease->client_id.length); | |
49 | if (r < 0) | |
50 | return r; | |
51 | ||
52 | r = sd_bus_message_append_array(reply, 'y', &lease->address, sizeof(lease->address)); | |
53 | if (r < 0) | |
54 | return r; | |
55 | ||
56 | r = sd_bus_message_append_array(reply, 'y', &lease->gateway, sizeof(lease->gateway)); | |
57 | if (r < 0) | |
58 | return r; | |
59 | ||
60 | r = sd_bus_message_append_array(reply, 'y', &lease->chaddr, sizeof(lease->chaddr)); | |
61 | if (r < 0) | |
62 | return r; | |
63 | ||
64 | r = sd_bus_message_append_basic(reply, 't', &lease->expiration); | |
65 | if (r < 0) | |
66 | return r; | |
67 | ||
68 | r = sd_bus_message_close_container(reply); | |
69 | if (r < 0) | |
70 | return r; | |
71 | } | |
72 | ||
73 | return sd_bus_message_close_container(reply); | |
74 | } | |
75 | ||
76 | static int dhcp_server_emit_changed(Link *link, const char *property, ...) { | |
77 | _cleanup_free_ char *path = NULL; | |
78 | char **l; | |
79 | ||
80 | assert(link); | |
81 | ||
82 | path = link_bus_path(link); | |
83 | if (!path) | |
84 | return log_oom(); | |
85 | ||
86 | l = strv_from_stdarg_alloca(property); | |
87 | ||
88 | return sd_bus_emit_properties_changed_strv( | |
89 | link->manager->bus, | |
90 | path, | |
91 | "org.freedesktop.network1.DHCPServer", | |
92 | l); | |
93 | } | |
94 | ||
95 | void dhcp_server_callback(sd_dhcp_server *s, uint64_t event, void *data) { | |
96 | Link *l = data; | |
97 | ||
98 | assert(l); | |
99 | ||
100 | if (event & SD_DHCP_SERVER_EVENT_LEASE_CHANGED) | |
101 | (void) dhcp_server_emit_changed(l, "Leases", NULL); | |
102 | } | |
103 | ||
104 | ||
105 | const sd_bus_vtable dhcp_server_vtable[] = { | |
106 | SD_BUS_VTABLE_START(0), | |
107 | ||
108 | SD_BUS_PROPERTY("Leases", "a(uayayayayt)", property_get_leases, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
109 | ||
110 | SD_BUS_VTABLE_END | |
111 | }; |